Detailed information about oral endoscope products：

1. Pixel: 3 million pixel CMOS sensor input / with LED backlight

2. Focusing type: 2 cm fixed focus

3. Viewing angle: 90-degree angle, with minimal distortion

4. Focal range: 2 - 50 cm

5. Signal: NTSC / PAL

6. Image output: VGA output

7. Power input: DC 5V

8. Image storage: TF card

9. Display resolution: 1330x768  Wide screen

1 .Working environment: The digital oral examination device should be able to function properly in the following conditions:

a) Ambient temperature: 5°C to 40°C;

b) Relative humidity: ≤80%;

c) Power supply voltage: 220V ± 22V, 50Hz ± 1Hz;

d) The surrounding air must not contain large amounts of dust or corrosive substances.

2. Appearance and structure

2.1 The device’s appearance should be neat, without any noticeable defects such as discoloration, damage, or scratches; plastic components of the casing should not have issues like shrinkage or poor injection molding, while metal components should be free from machining defects such as burrs.

2.2 The interior of the lens must be free of dust and any foreign objects that could interfere with its imaging function; there should be no optical defects such as light leakage.

2.3 The buttons should operate smoothly, without any sticking.

2.4 All connector fittings must be secure and reliable, allowing for easy connection and disconnection without any sticking.

2.5 Button labels should be clearly visible, as well as the device’s serial number and other markings.

3 .Performance

3.1 Image quality  

Defects such as blurriness or double images in the image. 2.3.2 Lighting system  

The imaging quality must be good at a distance of 2–50 cm; colors should remain true without any changes, and the image should be clear without any water marks or darkness.  

The LED lighting system must produce uniform white light, with a color temperature of at least 5000K and an illuminance of at least 4000 LX. It should illuminate the surface of the object being inspected within the effective focal range, while preserving its original colors without distortion. The areas illuminated by the light should not experience excessive heat that could cause burns, and the temperature increase should not exceed 5°. The light should also be free from any fluctuations or dimming issues.  

3.3 Photography function  

The D70S and D70Plus allow the display screen to be divided into 4 sections, enabling separate photos to be taken. After taking a photo, the various control buttons can be used for taking photos, storing them, and viewing them. The D70Pro requires specialized software to take photos, which can also be used to store and edit those photos.  

3.4 All connection wires should function properly, without any issues.

Q: What sensor and resolution does it use?
A: 3 million pixel CMOS sensor with LED backlight; display resolution 1330×768 wide screen.

Q: What is the focus type and focal range?
A: 2 cm fixed focus, focal range 2–50 cm, with a 90-degree viewing angle and minimal distortion.

Q: What signal and image output does it support?
A: NTSC / PAL signal with VGA output. Power input is DC 5 V, and images are stored on a TF card.

Q: What are the working environment requirements?
A: Ambient 5–40°C, humidity ≤ 80%, power supply 220 V ±22 V / 50 Hz ±1 Hz, and air free of large amounts of dust or corrosive substances.

Q: What are the lighting and image quality specifications?
A: Clear imaging at 2–50 cm with true colors. LED light offers color temperature ≥ 5000 K, illuminance ≥ 4000 LX, and temperature rise within 5°C.

Q: What photography functions are available?
A: D70S and D70Plus can split the screen into 4 sections for separate photos, with buttons for taking, storing, and viewing. D70Pro uses specialized software for taking, storing, and editing photos.